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lorasvet [3.4K]
4 years ago
5

Find the exact value of sec 5pi/4.

Mathematics
1 answer:
Papessa [141]4 years ago
3 0

Answer:

-(sqrt2)

Step-by-step explanation:

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The sum of the digits of a two-digit number is 8. The difference between the number and the reversed number is 10 more than the
Vesna [10]

Answer:

The number is 62

Step-by-step explanation:

Let the digits of the number be T and U;

A 2 digit number is represented as: 10T + U

So,

T + U = 8

10T + U - (10U + T) = 10 + 10U + T

Required

Find the digit

Make U the subject in the first equation

U = 8 - T

Substitute 8 - T for U in the second

10T + U - (10U + T) = 10 + 10U + T

10T + 8 - T - (10*(8-T) + T) = 10 + 10(8 - T) + T

10T + 8 - T - (80-10T + T) = 10 + 80 - 10T+ T

10T + 8 - T -80+10T - T = 10 + 80 - 10T+ T

Collect Like Terms

10T + 10T - T- T + 8  -80 = 10 + 80 - 10T+ T

18T -72 = 90 - 9T

9T + 18T  = 90 + 72

27T  = 162

T = 162/27

T = 6

Recall that:

U = 8 - T

U = 8 - 6

U = 2

<em>Hence, the number is 62</em>

5 0
3 years ago
6. what is the value of x
Anarel [89]

Answer:

Step-by-step explanation:

Think that a triangle is equal to 180

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3 years ago
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Round 29,857 to the nearest ten thousand
lesya692 [45]
The answer is 30,000 because the nine makes you round the thousands higher and makeing the rest 0.
4 0
3 years ago
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Purse contains four $1 bills, five $10 bills and two $5 bills. The odds of pulling out a $1 bill on the first draw are
Mazyrski [523]

Hey there! :)

Answer:

4 /11.

Step-by-step explanation:

Given:

4 $1 bills

5 $10 bills

2 $5 bills

Add up the number of bills to find the total:

4 + 5 + 2 = 11 total bills.

The probability of pulling a 1 dollar bill would be expressed as:

# of $1 bills / total

Therefore:

4 / 11 would represent this situation.

3 0
3 years ago
Can someone please help me
mart [117]

Answer:

the answer is B,D,A :,D

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